HowTo Change Speed from 10mbit/s to 100mbit/s

[Matthias_24]

Hi,

I'm a german student and the following request:

I have a problem with a Tru64 Cluster network settings. On all workstations/clients (25) are 10mbit/s set. Now we are trying to change to 100mbit/s. After setting all clients to 100mbit/s and the server too, nothing works, the entire net was missing. To change the settings, i used sysman, where both options 10 and 100 mbit are displayed. After reboot, all settings ,i have made, were rechanged automatically to 10mbit/s.
I have to say, that i am a absolute beginner in Tru64. Here, at our University Rostock (Germany), nobody is been versed correctly with Tru64/Network Settings. The computer pool is a little bit old.
And i have also not controlled the switch between the clients and server. I think, its a Gigabit switch.
And now my question:
How do i change these settings, must i do this in the bios (or something like) or in a terminal during running the os? What was my fault?
The workstations are Compaq Alpha Station XP1000 mit 667 MHz (DEC Digital). The server i don't know, not seen yet.

MfG
Matthias

[Venkatesh BL]

Check the setting in '>>>' prompt, especially, "ew*0_mode" (Example: >>> show ewa0_mode)

[Kari Uusimäki]

Hallo Matthias,

You have to shutdown the OS to console mode (where the >>> prompt is displayed). There you can find out which network adapter (ewa0, ewb0, etc) the machine has by issuing
>>> show config

Then you set the adapter to correct mode (auto [=autonegotiation], twisted-pair[=10Mbit/s], Fast [=100Mbit/s, half-duplex] or FastFD [100Mbit/s, full-duplex] by issuing the command
>>> set ew*0_mode FastFD

If you intend to use FastFD, you have to be sure the network switch is also set to 100Mbit/s, full-duplex.
I suggest you try auto first and if that doesn't work use FastFD.

After you have changed the setting - which will be permanent - you can boot the OS.

Viele Gruesse nach Rostock,

Kari

[Matthias_24]

Okay, Thanks. It works now.

[Robert Walker_8]

Hi,

I would be careful and do some file transfer tests (i.e FTP to/from servers if you dont get 5MB/s+ in both directions then you have some problems).

We did the above fixes (ie at console) also note that any network changes through sysman seem to update rc.config network speed setting for all devices and drop the speed 200 out of the config file!

We sometimes found that we got excellent upload speed 7MB/s but poor download 100KB/s. This was often found that the interface was defined as 100 HD (even though set with sysman and at the console). We would then manually correct via console with the commands below:

Suggest modifying directly rc.config and setting speed 200 on the appropriate interface(s) or placing

#ifconfig ee0 down
#ifconfig ee0 speed 200
#ifconfig ee0 up

in some form of startup script to force 100 Full Duplex otherwise with some switches (Cisco) you get 100FD on one end and 100HD on the other.

Id also suggest dont use Auto - Cisco's and Alphas seem to have problems getting their autonegotiation correct and it appears all is well until you transfer the other way!

Just my 2 cents worth.

Robert.

[Venkatesh BL]

Check this:
http://forums1.itrc.hp.com/service/forums/helptips.do?#28

[David_854]

Mathias,
Its better late than never.
Take a look at this posting.

"How to check lan card setting on Tru64?"

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=736325

David